Asian summer monsoon Chemical and Climate Impact Project (ACCLIP)

该项目将提供旅费，以便为亚洲夏季季风化学和气候影响项目（ACCLIP）实地活动寻找合适的行动基地。该野外活动建议使用美国国家科学基金会/美国国家航空研究中心的研究飞机湾流V和美国国家航空航天局的WB-57来表征亚洲夏季风（ASM）对全球化学和气候的影响。ACCLIP计划于2020年7月至8月举行，飞机驻扎在日本。ACCLIP的目标是测量来自西太平洋基地的ASM反气旋处理过的空气中的独特化学成分、水蒸气和气溶胶含量，以评估其对大气化学和辐射的全球影响。ASM反气旋已被证明在对流层上层-平流层下层(UTLS) -亚洲对流层顶气溶胶层（ATAL）含有一个增强的气溶胶层。在北半球夏季，通过深层季风对流，ATAL与UTLS动力系统的耦合有可能产生显著的化学和气候影响。ATAL中潜在的大量黑碳（BC）增强也可能通过产生原位加热影响该地区的动态过程，从而潜在地减少降水。该奖项反映了美国国家科学基金会的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。

This project will provide travel funds for locating a suitable base of operation for the Asian summer monsoon Chemical and Climate Impact Project (ACCLIP) field campaign. This field campaign suggests to use the NSF/NCAR research aircraft Gulfstream V and the NASA WB-57 to characterize the Asian Summer Monsoon's (ASM) impact on global chemistry and climate. ACCLIP is planned to take place during July-August of 2020 with aircraft based in Japan. The goal of ACCLIP is to measure the unique chemical composition, water vapor, and aerosol content in air processed in the ASM anticyclone from a base in the western Pacific in order to evaluate its global impact on atmospheric chemistry and radiation. The ASM anticyclone has been shown to contain an enhanced aerosol layer at the upper troposphere - lower stratosphere (UTLS) level - the Asian Tropopause Aerosol Layer (ATAL). The coupling of the ATAL to the UTLS dynamical system through deep monsoon convection in the NH summer season has the potential to generate significant chemical and climate impacts. Potentially large black carbon (BC) enhancements in the ATAL also may affect dynamic processes in the region by generating in situ heating, potentially reducing precipitation.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.